GREEN-HOUSE. 



151 



the ligatures may be removed. If the stock was not short- 

 ened down close to the graft, or junction of the scion with 

 the stock, at the time of the operation, it may be done 

 now, or as soon as the ligatures can be entirely dispensed 

 with. In particular cases, a ligature round the graft, or a 

 stake or other prop, for the shoots of the scion, may be 

 necessary for a year to come, to protect against winds ; or 

 a bandage of moss kept over the graft, to preserve moisture, 

 and encourage the expansion of the parts, and complete the 

 filling up of the wound. — Loudon. 



Effects of grafting. — The nature of the fruit is, to a cer- 

 tain extent, affected by the nature of the stock. Miller 

 says decidedly, " that crab-stocks cause apples to be firm- 

 er, to keep longer, and to have a sharper flavour ; and he 

 is equally confident, that, if the breaking pears be grafted 

 on quince stocks, the fruit is rendered gritty or stony, 

 while the melting pears are much improved by such stocks. 

 This, according to Neill, is scarcely to be considered as 

 inconsistent with Lord Bacon's doctrine, ' that the scion 

 overruleth the graft quite, the stock being passive only 

 which, as a general proposition, remains true ; it being evi- 

 dent, that the scion, bud, or inarched shoot, is endowed 

 v/ith the power of drawing or forming from the stock that 

 peculiar kind of nourishment which is adapted to its na- 

 ture, and that the specific characters of the engrafted plant 

 remain unchanged, although its qualities may be partially 

 affected." — Ed. Encyc. art. Horticidture, 



GREEN-HOUSE.— A green-house is a building de- 

 signed to protect, during winter, such exotic plants, shrubs, 

 and trees, as Vvall bear being exposed to the open air 

 daring summer, but are too tender for such exposure in 

 winter. 



J. W. Watkins, Esq. of New York, gives the following 

 plan for the construction of a green-house, in the Trans, of 

 the Agric. Sac. of the above state : — 



" The building should be sunk in the earth from two to 

 four feet, in proportion to the size of the house, and ac- 

 cording to the nature of the soil ; as clay retains moisture, 

 and of consequence produces dan^ps, in such ground it 

 should not be so deep. The height should not exceed 

 twelve feet from the exterior ground, by which it will 

 ^be less exposed to high winds. The width shofild not 

 exceed sixteen or eighteen feet, as the sun's rays are, at 

 that distance from the glass, very feeble. A south front is 

 well known to be the tnie one, but advantage should b« 



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